Finding the Fourth Proportional to 2,233.52, 3,348.48 and 1,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.52 : 3,348.48 = 1,139.20 : x
2. Step 2: Convert to fraction form
   2,233.52/3,348.48 = 1,139.20/x
3. Step 3: Cross multiply
   2,233.52x = 3,348.48 × 1,139.20
4. Step 4: Simplify right side
   2,233.52x = 3,814,588.42
5. Step 5: Solve for x
   x = 3,814,588.42/2,233.52
6. Step 6: Final answer
   x = 1,707.88